Patents by Inventor Mary H. Chapman

Mary H. Chapman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7572468
    Abstract: Methods for extraction of carotenoids from carotenoid-containing plant material using an extraction solvent comprising ethyl lactate. The invention is also directed to products obtained thereby. In the method, a sample of dry, particulate carotenoid-containing plant material is contacted with the ethyl lactate extraction solvent to extract the carotenoids. The method also includes the use of an ethyl lactate-ethanol blend as the extraction solvent. After extraction, the solvent containing the extracted carotenoids is separated from the extracted plant solids and treated to separate the dissolved carotenoids from the extraction solvent and obtain a carotenoid-containing concentrate. The concentrated carotenoid product may be used directly or may be subjected to further treatment. After removal of the dissolved carotenoids, the extraction solvent can be recycled for further use.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: August 11, 2009
    Assignees: The United States of America as represented by the Secretary of Agriculture, United Technologies
    Inventors: Betty K. Ishida, Mary H. Chapman, Sarabjit Singh Randhava, Sikander Singh Randhava